Roller-bearing.



PATENTED JUNE 293, "A

T. AI REWARDS.

ROLLER BEARING.

APPLICATION FILED JUNE 1,1903. RENEWED DEG. 6.1905.

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1111.821533. Y PATDNTDD JUNE 26, 190s. T. A. EDWARDS.

l ROLLER BEARING.. APPLIGATION FILED JUNE 1.1903. DDNDWDD DDD. 6.1905.

2 SHEETS-SHEET 2.

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"unrrno Asit-.Amis PATENT oF ion.

'THOMAS A., EDWARDS. o F BosToN, 'MAssAoHusErrs. t ROLLER-BEARING; l

no. s245533.

speciaation df Letters Patent.

Patented Ju'zie 26,1906.

, duplication iledfJune 1, 190,3, Renewed- Deceinberilf. VSerial No. 290,604.

To tu Iwleovwfifi'l/ctzy 'concern/:j Be it known tiiat I, THOMAS- 11A Enwanns, of..'B oston, 'in 'the `county f Suffolk and State lof Massachusetts, have invented certain new and useful Improvements in Rol-l er,;

Bearings, of which thefollowing is a specifi cation. y rPhis'invention relates to antifriction. devices interposed between a centralshaft-or journal-.and a hub, casing, or other body sur.

rounding the journal, one of said-partel having arotary motion. v.

'The'invention has for its object to provide certain improvements in the said antifriction tional resistance. to agreater extent than devices looking to the overcoming of fricheretofore; and-to this end the inventionconsists the improvements which I will 'now .proceed to describe and claim. zo `y Of the accompanying drawings, forming a .part of this specificatiom'Figure' 1 rel resents a longitudinal section'sl'iowing aj rol er-bearing'embodying-mybinvention applied to the arm or journal-portionbf an axle and la hub f'a section on line 2.2 of Fig. 1.y Fig 3 re readapted to rotate thereon. Fig. Zrepresents 'sents a' side-viewshowing two ci the'ro lers Aand a spiral' separator coperating therewith. Fig. f4 represents a reduced viewsimilar to 'Fig'. 1, but omitting .the separators and end# thrust'beaing-rollers'shown in Fig. 1. Fig.

- 5l represents, a fragmentary sectionalview showing a'construction similar to that shown .Fig-. 1,' but emitting the spiral'separators.' Fig. vrepresents' a fragmentary,A sectional view dieringin certain details from the con- 'struction shown in Fig. 1.7. Figa?, 8,9, 10, and 11. represent sectional views showing Inodications Vof -my invention.

resents a'side'view of a modified form of the vkspiral separator. Fig. '13v represents aside view of van"alternative form Aof 4se}: a'rator.

Fig. le represents a side view and a sectional view? of one. of thel outwardly-projecting flanges or"c`ollars, jhereinafter referred to.

p Fig. 1 5 represents `asectional-view of a portion'of one ofthe inwardly-proj ecting flanges,

hereinafter referred to. AFig.` 1-6 is a sectional "view' on line16 1'6, Fig. 7, illustrating the ,structures emp-loyedi'n Figs. 7, 8, andv 9; Fig.' 17^is a similar view onhline 1 7 '17,"Fig, 11', illustrating the structures of Figs. 10 and 11;

same parts in "all the figures, 1

In the drawings, 'arepresents av yournal'V or eshaft which embodiment of my inven- The saine reference characters indicate the By employing a pluralityof Fig. 12 repown as the arm 'of avehicle-axle. ts a caslng or hub surroundingsaid ar space.

A l'ou'rn and separated'therefrom by an annu- In 'the 'embodimentsof invention s shown in Figs. 1, 2, 4, 5, 6,7, 8, andiQ'Iv have -I shown interposedv between they hub or casing' concentric` with the ljournaland `the outer 'ner set composed of smallerrollersn. 'They two sets of rollers areseparated from' each other by an innen'casing or sleeve d, which is casing and-is'adapted to rotate with the outer casing, although not .attached rigidly thereto, 'l

the inner casing being adaptedto rotate independently of the outer;v The rollers of each series. are se arated from each other by separators e, eac -of-Which bears upon thel 1 peripheries of two of the-rollers and upon the,-

inner surface of the easing 4surrounding the rollers-as shown in Fig. 2. Each separatorv e is preferably of spiral' form, its structure resembling that of an auger-blade. This form, While giving theseparators sufficient space area, reduces tothe minimum the friction resulting froml thecontact of the separators vwith the 'rollers and casiiigs and. at the same time distributes the wear resulting from such Contact, so that there 'will' lbe no unequal wear and no formation of local grooves in the,

surfaces ofthe rolls land casings. l sets of rolls arranged as shown and described, each set being separated from the next by a sleeve or casing adapted to vrotate independently, I greatly reduce the friotional resistance. Ido not lirnit'myself to two series of rollers, itbeing obvious that the number of-series may be increased to any extent desired.v

Means are provided for preventing the end- Wisedisplacement of .the rollers and the separators, said means as here shown, comprising inwardly-projecting .ianges ff at 'the ends of the casingsfb and d, said lianges being prefer? ably beveled'on thei'rinner sides and bearing on the Correspondinglyebeveled ends ofthe rollers` and separators'. To coperate with the inwardly-projecting flanges lff I provide outwardly-projecting flanges g g, the iianges g being located on the journal @,Whiie the iianges g are located onthe'inn'er'casing d.

IOO

los,

beveled ends'of the rollers, but do not bear upon the separators. The inwardly-projectin g tlangesff are preferably integra-l wit-h the casings b and 11,. while the outwardly-project-- ing tlanges g g' are preferably made as independent rings. (See Figs. 14 and 15d These rings may be sprung upon the journal a and inner casing d or secured thereto iti-.any other suitable way. j

1l vi represent frusto-conical ends'thrust bearing-rollers. which are supported in recesses formed for their reception in collars j j j at the opposite ends of the journal a. bear against portions of the ends ot lt he outer and inner easings b and d and reduce to the minimum the fric-tional resistance caused by end thrust.. The'` outer ends of the"l rolls i i may be retained in the recesses in the collars j by means of rings k inserted in the inner sides of the collars and constituting inwardlyrojecting flanges formed to bear upon the lieveled bases ofthe rollers 1`. Theinner ends of the rolls i i may be retained by iny'vardlyprojecting tlanges m 111. formed on the collars j and engaging the beveled inner ends of The rollers the rollers 1'. or they may be retained by.'

independent rings. like the rings 7s. The rollers 1' i have a planetary motion in the collars j j. each roller rotating on its own axis and revolving around the journal a. The recesses in the collars j receiving'saitl rollers constitute continuous circular grooves or races. permitting the planetary motionof the rollers. Separators like the se iarators c, but ot tapering or frusto-conical form, may be inserted between the rollers 1' i, each separator bearing simultaneously on two ot thev rollers li and on the race formed in the collar j.

ln Fig. 6 l show the inwardly-projeeting tlangefon the hub or outer easing b provided with an extensionj", which projects inwardly over the ends of the rollers e and has a beveled ribf'f engaging the rollers c. the said rib taking the place of the outwardly-projecting tlange g. tShown in Fig. 1;l A similar construction is shown on a smaller scale in Fig.

Figs. T. S. and tl show certain modilications in the forms of the rollers and journal. which are sutliciently obvious to be understood without description.

ln Figs. 10 and 11 l show one series of rollers instead of a plurality of series. the inner casing d being therefore omitted.

Fig. 13 shows a form of separator which is designed to reduce the extent of frictional or contacting surface. This separator has a re duced body portion o. an enlarged central portion o'. and enlarged end portions o`-. the

said enlarged portions being the only parts of the separator that come in contact with the rollers and their casing. l prefer the spiral form of separator, because of the distribution of wear which is`etl`ected thereby. The convolutions of the spiral may extend continuousl)- from end to end` as shown in Fig. 3. or

there may be two sets ot oppo\s1te p1tch ex @sam tendin from the center of the separator is shown in Fig. 12. lYhen a lubricant is used,- the spiral separatorsjact to distribute the lubricant lengthwise of/the separators. To insure uniform distribution, some of the separat ors may have 'if rightI-hand pitc .and others a left-hand pitch, as shown in Fig. 1. one set of separators cmt/Vueting the oil in one direction and the other set in the opposite' direc.

tion. The spiral or auger-blade form of ther separators proyirles-extended air-spaces tween the rolls` so that there is sueh'a free` circulation of air as to enable' the bearing to run, in many cases` without oil,

Preferably the rings or outwardly-projecting llanges g g are not attached to tli'eparts a and d, but are loose thereon, so that they may rotate independently. The inwardly-projecting flanges]- (or the rings g substituted for them. as shown in Fig. 15) may also be loose.A It will be seen, therefore, that the said loose rings or flanges and the loose independently-rotata-ble inner casing d constitute loosely-rotatable members bearing against the shoulders j j a't the ends of the journal and tending to reduce the frietional resistance due to end thrust. whether the shoulders.' are irovided with rollers `i or not.

Tlie sleeve d acts as an inner support for the outer rollers during the operation of .assembling the same. I propose to employ a. similar sleeve as a temporary support for the inner rolls during the assembling operation, said sleeve beingpreferably a sheet-metal tube of the same diameteras the journal and adaptedto be displaced endwise by the oper' ation of inserting the journal, the latter tak ing the -place of the tube.

Han'n'g thus explained the nature of my invention and described'a. way of constructing and using the same; although without having attempted to set forth all the formsin which it may be embodied or all the modes of its use, I declare that what I claim is 1. A roller-lwaring comprising a journal, a. easing surrounding said journal, antiriction'- rollers interposed between the journal and casingl` and spiral separators each bearing simultaneously on the inner surface of the casing. and the peripheries of two adjacent rollers.

2. A roller-lwaring comprising a journal, a casing surrounding said journal` al plurality of sets of antitriction-rollers interposed between said casing andy journal. a. sleeve interposed between said casing and ,-iournal and' separating said sets of rollers. angl meanscarried by the casing. sleeve and jonrr/al cooper` ating to prevent endwise displa cement ot said rollers.

j 3. A roller-bearing compri-sing a ournal. a casing surrounding said ournal1 a plurality olf' sets of antifriction-rollers interposed be `tween said casing and journal, a sleeveinterposed between said easing and journal and t IIO VIS

collars mounted on said sleeve and journal ,saidsleevie'u Y i60-ting bevel 25- the ends of said rollers bearing againstI said flanges and collars.-

V4:. A rolerfbearin comprising a journal, a

,casingsurroundjn'g't e journal,` a leose sleeve between the journal casing, jp-'said sleeveand casing having inwardly-pro- 'set'o-, antifiiction-rollers interposed betweenv jecting beveled flanges at their ends, an outer the casing and sleeve andmhaving beveled ends engaged with the beveled flanges on the casing, land an inner setV of. antiriction-rollers inter osed' between the sleeve and journal and v aving beveled-ends enga ed with the beveled flanges ofthe sleeve, sai llanges. reventing endwisefdisplacement of` the ro 1ers tiel-ytothecjas'ing and sleeve.

'frollerliearif g comprising a journal, a casing. gfthe journal, .a loose sleeve er1-'the journal and casing, having nwardl -proflanges at their en s an ifr'iction-rollers interposed {'between thefe'iiising and sleeve and havin beveled ends` engaged with the .bevele flanges on' the casing, an inner'set-of antifricand 'ou'rnal and-ha beveled ends engage with the beveled an es ofthe sleeve,

beveled rings mounte journaljand sleeve and engaging the beveled nds of the two sets of rollers.

6. A roller-bearing comprising a rotating loosely on the 'spiral separators' eaclljf bearing simultaneripheries of t-WO adjaoentzrollers.'

7. A roller-bearingleenprisi'n a journal, a casing surrounding said'ilj'ournala plurality of sets of fantifrct'iomro 1ers vinterposed beposed betweensaid casin and journal and separatin said sets of rol ers, separators interposed v etween the rollers vof each set, and means carried by the casing, sleeve pand journal adapted to prevent endwise displacement 'of said rollers and separators.

8. .A roller-bearing comprisin a journal, a casingsurrounding'said ourna a plurality of sets of antifriction-rolllers interposed between said casing and journal, a sleeve inter posed between said oasin and journal and separating said sets of rol ers, a set of spiral .separators interposed between the rollers of each set and bearing against the inner portions of said casing and sleeve respectively, and means -or holding lsaid roll vrators in position..

In testimony hereof I have aflixed -my signature in presence of two witnesses.

Y THOMAS A. EDWARDS. Witnesses:

E. BATCHELDER.

--and Va non-rotating part having opposed surf"` ."faces separated Yby afroller-receivlng spade', rollers inserted in said space and bearing si -I'n'ultaneously against fi'said surfaces, and

tween said casing'- and journal, a sleeve interers and sepa- 

